Rachel Barnhart, who recently left a Rochester television station, announced this week that she plans to challenge incumbent Democratic Assemblyman Harry Bronson in a primary election in September. Barnhart describes herself as “an advocacy journalist” and, if elected, says she will be a “watchdog legislator.”

The 138th Assembly District includes parts of the city of Rochester and the towns of Henrietta and Chili. Bronson has represented the district since 2011.